SharePoint 2010: Adding taxonomy field to files in a Document Library

Pre-requisite is that a taxonomy structure is set up with a "Term Group" group, a child "Term Set" with a "Term Name" term on it. Other than that, it's just about adapting site and list names to your deployment.

Here's the code:

        private void Test()
        {
            // get doc lib
            SPWebApplication wa = SPWebApplication.Lookup(new Uri("http://server"));
            SPSite site = wa.Sites["/sites/test"];
            SPDocumentLibrary dl = site.RootWeb.Lists["DocumentLibrary1"] as SPDocumentLibrary;
          
            // get taxonomy field
            TaxonomySession session = new TaxonomySession(site, false);
            TermSet set = session.DefaultSiteCollectionTermStore.sGroups["Term Group"].TermSets["Term Set"];
            Term term = set.GetTerms("Term Name", 1033, false)[0];
            TaxonomyField tf = dl.Fields["Term Field"] as TaxonomyField;

            // add files
            for (int i = 0; i < 100; i++)
            {
                using (FileStream fs = (new FileInfo(@"C:\Content.txt")).OpenRead())
                {
                    // add item
                    string name = "Name " + i;
                    Hashtable ht = new Hashtable();
                    SPFile file = dl.RootFolder.Files.Add(name, fs, ht, true);
                    SPListItem item = file.Item;

                    // set item's taxonomy field value
                    tf.SetFieldValue(item, term);
                    item.Update();

                    // progress
                    Console.WriteLine("{0} created", name);
                }
            }
        }